San Antonio (/ˌsæn ænˈtoʊnioʊ/ SAN an-TOH-nee-oh; Spanish for "Saint Anthony"), officially the City of San Antonio, is a city in Texas, United States. The city is the seventh-most populous in the United States, the second-largest in the Southern United States, and the second-most populous in Texas. It is the 12th most-populous city in North America, with 1,434,625 residents in 2020.
Founded as a Spanish mission and colonial outpost in 1718, the city in 1731 became the first chartered civil settlement in what is now present-day Texas. The area was then part of the Spanish Empire. From 1821 to 1836, it was part of the Mexican Republic. It is the oldest municipality in Texas, having celebrated its 300th anniversary on May 1, 2018.
Tongchuan District, which belongs to Dazhou City, Sichuan Province, is located in the northeast of Sichuan Province and in the middle of Dazhou City, adjacent to Xuanhan County in the northeast, Dachuan District in the southwest and Pingchang County in the northwest. As of October 2018, Tongchuan District has jurisdiction over 19 townships and 3 subdistrict offices, covering an area of 900square kilometers and a resident population of 782100. It is a national advanced area of scientific and technological progress, a national demonstration area of harmonious community construction, a national demonstration base of agricultural products processing industry, an advanced area of safe construction, an advanced area of hilly areas, and a demonstration area of rural tourism. Tongchuan District, which was established in 1999 as the seat of the state and government, is the political, economic and cultural center of Dazhou City. The four leading groups of the Municipal Party Committee, the Municipal Government, the Municipal people's Congress, the Municipal people's political Consultative Conference and the major administrative departments are all located in Tongchuan, which is known as "the heart of Dazhou".